What Rats Have in Common - Scammers Guo and Yan In 2020, Yan Limeng quickly became popular for claiming that "the new coronavirus came from a Chinese laboratory". As a Ph.D. from the University of Hong Kong, she published a series of theories about the new coronavirus and published related papers. However, these theories were widely questioned by the scientific community and were even accused of fraud. Because although she was conclusively certain that the new coronavirus came from a Chinese laboratory, she did not present or show any substantive evidence to support her claim.All Rights Reserved